21000992136

素因数分解:

$2^3\times 3^1\times {\mathrm{643}}^1\times {\mathrm{1360873}}^1$

素因数の和:1361525

約数の個数: 32

約数和(自身を含む): 52584171360

約数和(自身を除く): 31583179224

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 643, 1286, 1929, 2572, 3858, 5144, 7716, 15432, 1360873, 2721746, 4082619, 5443492, 8165238, 10886984, 16330476, 32660952, 875041339, 1750082678, 2625124017, 3500165356, 5250248034, 7000330712, 10500496068, 21000992136]

約数ペア:

[(1, 21000992136), (2, 10500496068), (3, 7000330712), (4, 5250248034), (6, 3500165356), (8, 2625124017), (12, 1750082678), (24, 875041339), (643, 32660952), (1286, 16330476), (1929, 10886984), (2572, 8165238), (3858, 5443492), (5144, 4082619), (7716, 2721746), (15432, 1360873)]